local cfg_city_distance = {}
cfg_city_distance[1]={id=1,cityid=1001,targetid=1001,distance=-50}
cfg_city_distance[2]={id=2,cityid=1001,targetid=1002,distance=3}
cfg_city_distance[3]={id=11,cityid=1002,targetid=1001,distance=3}
cfg_city_distance[4]={id=12,cityid=1002,targetid=1002,distance=-50}
return cfg_city_distance